Water-tube boiler



r .H. O. BKER.

WATER TUBE BOLER. APPLICATION FILED IIIAR. 29, IQIQ.,

m2@ im@ IIIImIIIIIIIIg., 8, Im

' y a SHEETS-SHEET 1I.

2l QJ-@@dl l@ l?. 2@ 22 A TTORNEYI?.

II- 0. BAKER.

` WATER TUBE BOILER. APPLICATIOII FILED LIAR. 29, 1919.

Pafned Aug. 8, 11922.

3 SIIEET-SHEET 2.

W1 ITNESS.-

BY 7 n l A TTORNEY,

H. 0. IMKER.

WATER TUBE BOILE'R.

APPLICATION FILED MAR. 29, 1919.

WITNESS; INI/ENToR. I

V%W @OQG/ A TTORNEYJ'.

Patented Augp 31922 8 SHEETS-SHEET 3.

H. O. BAKER.

WMM: TUBE Boum.

APPLICATION FILED MAR. 29, 1919.' )L l L9 ggggo memedAug., 89'1922,

- 8 SHEETS-SHEET 4.

Z5 INVENTOR.

ATTORNEYS,

WITNESS.- INVENTOR.

A TTORNEY,

H. 0. BAKER.

WATER TUBE BOILER.

' v APPLICATION man MAR. 29, 1919. I jlgpl. Mmmm Aug. 89 1922 8 SHEETS-SHEET 6.

l lvl 22 d WITNESS; 25 l I INI/ENTOR.

A TTORNEYS H. 0. BAKER. WATER TUBE BOILER.

APPLICATION FILED MAR. 29, 1919.'

Patented Aug. 8, 11922;,

8 SHEETS-SHEET 7.

iii??? A TTORNE YS,

H. 0. BAKER.

WATER TUBE Holm.

APPLICATION FILED MAR. 29. 1919. I

` Patented Aug. 89 )1922.

8 SHEETS-SHEET B.

.fmym EL time. Y

Specification of Letters atent.

Patented Aug. 8,

' f Aapplication filed March 29, 199. Serial No. 28%4'302 i i T0 MZ! "zc/0m 'it' ymay concern Be it known that l, HARTLEY O. Banni?,e a Ycitizen ot the United States, residing at Pueblo., in the county ot' Pueblo and State ot Colorado. have invented certain new and useful Improvements in Vater-Tubeoih ers: and l do hereby declare the 'following to be a full` clear, and the invention suoli as will enable others skilled in the art lto which it appertains to make and use thersame.

The present invention relates to water tube boilers or steam generators, and is an improvement over the water tube boilers disclosed in my copending application for patent filed Jan. 3, 19197 Serial No.y 269,432.

Theobject of the invention is the provision of a boiler composed of tubing `or coils arranged in a novel manner Jfor the elicient heating and flashing ot the Water into steam and also providing tor the storage ot water and steam and the boiler also including a drum or a stand pipe to which the tubing or coils are connected, in order to tacilitate the circulation ot water and steam, so that the circulation will be rapid and free5 to enhance the quick and abundant production otl steam. j

A turther object is the provision of such a` boiler embodying a central drum or stand pipe with surrounding coiled tubing and novel connections between the tubing and drum` whereby the lower portion of the drum and tubing are filled with water which is supplied constantly thereto` to prevent the bottom portion ot' they boiler from being colored byy the Lheat, burnt through or other-al` wise deteriorated-r while the upper portion of the drum and tubing cont-ain the steam, and the arrangement and connections being such that the water and steam can circulate freely and in a manner to obtain maximum production ot steam with A still further object is the combination `ot the coiled tubing with the central drum or stand pipe in such a way thatthe water level in the lower portion ot the drum and tubing will be equalized, andthe pressure ot thesteam against the water also equalilzed, in order that the production of steam and resultant pressure will not retard the flow of water or force the water beyond the parts of the boiler provided tor it. ln order that the boiler can have the benelits of circulaexact description ot minimum heat and tion through tubing as in tiash boilers without the usual objections ot' said tubing constructlon wherein the water in Howing into highly heated portions ot the tubing is dashed into steam, thus creating back piressure that will retard'the How ot water .and also permit the vflash portion of the tubing to become excessively heated, colored and deteriorated.l The arrangement is such that the water can circulate freely between the lower portions ot the drum and tubing. the steam passing'upwardly in the tubing and drum, and any water vcarried upwardlytherewith 44dropping downwardly in the drum to return back to the water in the lower portion ofthe boiler, while the steam which passes upwardly has an independent circulation to the point ot discharge and eX- erting pressure on the water at all points so as to equalize the pressure.

With the foregoing and other objects in view which will be apparent as vthe`descripx tion proceeds, the invention resides in the construction and arrangement ot parts hereinafter described and claimed, it being understood that changes can be ma de within the scope of what is claimed without departing from the'spirit ofthe invention.

The invention is illustrated in the accom panying drawing, wherein Figure'l' is an elevation ot' the boiler showing the water and steam reserve coils in section. e

Figures 2 and 3 are top and bottom plan views, respectively.

Figure if is a view similar to Figure 1.

of the preferred form'.

Figure 5 is a Sectionalvdetail of the central portion of the drum ot Figure al.'`

Figures 6', 7 and 8 are views similar to Figures l and l, showing other' variations in the boiler construction. j

Figure 9 is a plan view of the drum or stand pipe showing flue's therein. The present boiler like that shown in the application above referred tc,. as well as the lsteam generator disclosed in the copending application filed Dec. G. 1917, Serial No, Y2013513. composed chiefly ot tubing, and embodies thcwvater reserve and steam re serve coils l and Q.`respectively. which are of helical formation as illustrated, with the steam reserve coil above the water reserve coil so as to constitute a jacket surrounding the other coils for retaining the prodicc ggg

uctsof combustion within this jacket,'and therefore conserve'heat, which ma be supplied from below by anysuitab ey source The coils 1 and 2 do not. have a dir ect con- 5 nection, but are independent, the ,lower one providing for a large water reserve'for the boiler, and the upper one providing a large steam reserve space, whereby water and steam are both held in reserve in abundant quantities so as' to avoid interruptions and generation and supply of able form, and Aconstituting a hollow core or' chamber for the boiler for the purpose of equalizing the pressure and affording free .if circulation of water and steam. The water supply'pipe 4 is connected tothe upper end of the-water reserve -coil 1 sothat this coil 1 is constantly supplied and filled with water, which will receive its initial heat in said coil, and a' sp'iral water heating coil 5 surrounds the lower end of the drum-3 within the lower-portion of the coil 1, and

' has its outer end connected to the lower end of. the coil 1 to receive water therefrom, while the4 inner end of the coil 5 is conj1 nested to one side of the drum adjacent to its lower end. This coil 5 is constantly supplied with water from the water reserve coil .1, and is disposed immediately above the flames, but this coil 5 like the other lower-- most coils'is always supplied with water, so as to prevent the excessive heating ofl the f coils which are subjected to the greatest heat, thus 4avoiding the coloring of the lower portion of the boilerand consequent dete- 40 rioration orburning' through. This coil 5 l also supplies water. to the lower end of the drum. rlhe water will also be heated within the lower portion of the drum which is constantly supplied from the coil 5.

buperposed above the coil 5 `are similar spiral coils 7, 8 and 9 Ifor heatingthe water and generating the steam and the-inner ends of'said. water heating and steam generating coils 7, 8 and 9 are connected to the different sides of the drum 3 adjacent to the lower end'thereof. Elbows 6 can be used for connecting the coils 5, 7, 8 and 9 to the drum, and the vconnections are welded so as to avoid screw threads and similar connecy tions whichare constantly` subject to. leakage. The'water fiows from the lower portion of the drum into the coils-7, 8 and. 9 in which the water is heatedV further and thel generation of steam'started, and connect- 60. tions 10, 11 and 12 lead upwardly from vthe outer discharge end of the coils 7, 8 and 9, respectively, for conducting the Water and steam upwardly to the respective steam generating and heating coils-13,- 14 and 15 Yea which are superposed. above the lowermost rise in' the coils or aeaaiea 'spect to the coils 7, 8 and 9, the coil 7 being connected to the lower end of the coil 13, the coil A84 to the lower end of the coil 14,and the coil 9 to the lowerlend of the coil 15. Thus, ofthe coils 7 and 8 and 9, A

the lowermost discharges into the uppermost coil 13 of the steamI generating and Cv heating coils, and the intermediatecoil 8 discharges into the intermediate coil 14 while the upper coil'9 discharges into the lower coil 15.

ter, while the tubing of coils 1 and 2 is of relatively large diameter for purpose' of capacity.r Steam conducting pipes or tubes 1617 and 18 extend upwardly from the The tubing of the coils 5 L 7,'8, 9, 13,114, 15, is of relatively-small diameupperends ofthe respective coils 13, 14 and 15 and at their upper ends extend inwardly over the upper end of the drum 3,-and are lower end of the pipe 19 around they sides thereof, while any particles of. water delivered into the drum with the. steam will passl downwardly and drop into the water in the lower portion of the drum so that this drum constitutes a trap for catching any particles of water lifted with the steam and returning said particles to the water 4in the lower portionl of the boiler. Furthermore. the steam pressure 'is exerted downwardly on the water in the drum 3, as well as downwardly inthe coils 13, 14 and 15, to equalize the pressure on the water so'that there will. be no ltendency for'the water level to rum. Connected to the upper end of the 'drum 3 is a steam discharge pipe tube 20, leading to and connected .to the lower end of the steam reserve coil 2 to deliver the steam into this coil whiclris of large capacity so as to hold steam i'n reserve and keep same welded to the sides of a downwardlyl exilo heated. A steam heating and superheating coil 21 is disposed within the coil 2 around the drum above the coil 13, and comprises superposed spiral sections connected alternately at their inner and outer lends.Y The tubing of the coil 21 is of larger diameter than the tubing of the coils 7, k.8, 9, 13, 14 and 15, but is of smaller diameter than the tubing of coils 1 and 2, and is of substantially the same formation as coils 13, 1.4 and scribed, and said coils all surround the drum 3 and are located within the outermost coils 1 and 2. The connections are made by welding, so that the tubing` and drum constitute an integral unit which is not apt to spring a'lealr. and the connections are on the exterior ot the drum and coils so to be'accessible lor purpose ot' repairs.

.ln operation, the water flows downwardly into the coil l which will holda considerable quantity of'water in reserve so that the supply ot' water to the lower portion ot the boiler will be constant, without danger t the lower coilsgoing dry. The water tows from the lower end oi" the coil 1 through the coil 5 into the drum, the water receiving its initial heat in t'he coil 1 and then passing directly over the liames in the coil 5 to be heated further so that it enters the drum as hot water. From the lower portion ofthe drum the water flows up wardly into the coils T. 8 and .5) in divided streams. and the water will he heated in said coils and the generation of steam started, it beingnoted that said coils are down low close to the tlanies. and. that the 'ater rises trom the lower portion of the drum into the coils, T.. S and t) -and then the water and steam rise through therespective connec tions 10, l1 and 1:2 into the steam heating and generating coils 18. 14 and 15 in which the water is further heated and the steam generated and heated to pass upwardly through the respective pipes 16, 1T and 1S to the drum by way ot the pipelt). As above explained any particles ot' water carried upwardly with the steam will be discharged downwardly from the pipe 19 totall back into the body of water in the lower portion ol the drinn, while the steam will rise within the drum to the upper end thereof, and will pass through the pipe 20 to the reserve coil L) which is ot relativelwv large capacity so as to hold a quantity ot' steam in reserve to provide for a constant supply even under heavy loads. Furthermore. it will benotedy that the steam discharging into the drum 3 which constitutes a` part of the lower Yater chamber. will equalize the `pressure within the drum il and coils 13, 14 and 15, so that the water level will remain the same in said 'coils and drinn.. .lt will also be notedthat that the. use of the drum or stand pipe will he otad vantage in several respects. The drum servesA aS a by-pass between the steam and water chambers so as to equalize, they pressure in the, vater chamber. and from the upperend ot' the drum, the steam passes oti' through the pipe 2O into the steam reserve coil Q, and from thiscoil passes through the steam heating and superheating` coil 21, which is at the top of the coils sin rounding the drum within the coils 1 and 2.

Figures 4l and 5 show several moditications, one ol which resides in the use of a helical coil 1 at the outside continuous Jfrom end to end and providing` for both a water and steam reserve, the water being` in the lower portion and the steam in the upper portion of said coil, the tubing of' which is of relatively large diameter tor purpose of capacity. The water supply pipe i is connected to the water heating coil 5 surrounding the drum within the coil 1, and composed of superposed spiral sections, and a pipe or tube 23 extends upwardly from the coil 5 to conduct the water upwardly into the upper end of a -vertical water delivery pipe or tube 24 which extends' downwardly through the Lipper end ot the drum 3 and within said drum to a point near the lower end thereof, so that the water which is heated in. the coil 5 is delivered trom the pipe 24 into the lower end of the drum. The lower portion of the drum 3 is connected by branch pipe 25 with the lower convolutioniot' the coil l so that the wate1-.fill flow from the drum into the lower portion ot' the. coil 1 so as to maintain equal water levels in the coils and drum and to also equalize the` pressures therein. 'i water heating and steam generating coils T` ot which there may be any suitable num# ber, surround the lower portion of the drum within the coil 1 and have their outer ends connected to short vertical stand pipe Q6, the lower portion of which is connected to the lower convolution ot the coil 1 by means of a connection 2T. Thus. the water -in the lower portion of the druin and coil 1 will flow upwardly into the standpipe Q6 and into the coils T 1n a number Yol streams. and the water in the coils Tl will directly over the flames. 'The upper ends 'of the coils 7 are extended upwardly around the drum 3, as at'10, and are`connected to an outwardly offset or enlarged portion 28 of the drum 3 near the. center or between the ends thereof. Thus. the water and steam flow upwardly from the inner ends of the coils T back into the drum above the water level therein which is below the enlarged portion 28 and above the uppermost coil T the steam passing upwardly from the de- Superposecl spiral.-

' livery ends 10a of the coils, while any parti.`

cles of. water delivered into the drum will drop downwardly therein back into the water, thus separating the water and steam,

and also bringing. the steam pressure to bear against the water in the lower portion of the drum to equalize the pressure. In this connection', it will be noted that a pipe or tube 19l is connected to theupper portion of the coil 1a and extends downwardly throu h the upper end of) the drum 3a, to provi el a by'pass between the upper portions of the coil 1a and drum so that steam can pass from the drum into the upper por,- tion of the coil 1a which serves as a steam reserve chamber, any steam generated in the lower portion `of thecoil 1a also lpassing upwardly. "F rom the upper end of the coil 1a the steam passes into the steam heating coil 21 surrounding the drum and located above the water heatingcoil 5a. From the lower end of the coil 21, ,the steam passes through a'connection29 into a steam'superheating coil between the coils 5a and 7 a, and steam is delivered from the coil 30 lto the steam discharge pipe 22.

In the mo iiication shown in Figure-6,

' there is an outer helical coilv lbcontinuous fromfone-end to the other, and the water supplyy pipe 4'is connected -to the coil 1b bc drum to deliver 4the steam thereinto, the par- 3 and coil 1b.

tween its upper and lower ends to deliver the water into this coil, and it passes from .the '-lower convolution thereof through the branch pipes 25 into the lower portion of the drum 3, and if desired, the branch pipe.

25 may be disposed spirally so as to also constitute a waterheating coil at the vbottom of the boiler, as shown in Figure 1. The water thus passes from the lower portion oi' the coil 1b into the lower portion of the drum. Superposed waterlheating and steam generating coils 7, 8b 'and 9b are disposed around 'the drum and their lower ends are connected as at 6b,'to one of the branch pipes l25 so that the water will flow upwardly into` said coils from the lower portion-'of the coil 1b and drum 3. From the vcoils 7",^ 8b`, and 9", the

steam flows upwardly-through the respective pipes or tubes 16, 17 and 18 that extend downwardly through the upper end of the ticles of water falling down into the'drum to return to the body of water in the lower -p'ortion of the boiler. A pipe 19b also eX- tends from the upper end of the coil 1b vdownwardly through the topor upper end of the drum to deliver any steam from the -upper convolutions ofthe coil .1b into the drum, said upper portion of the coil 1b serving as a reserve steam space, because the steam can flow either way between the drum The upper end of the steam heating coil 21 is connected, as at 20b,'to

the upper end of the drum to receivey the steam therefrom, and the lower end of the' the drum.

coil 21 has a connection leadingto they steam superheating coil 30 between the coils 21 and 9", and the steam discharge pipe leads from the coil 30, the same as in Figure 4.

The `construction shown in Figure 7 is va compromise between those shown in Figures .l and 6,"there being a lower water reserve coil lkand anupper steam reserve coil`2with the water supply pipe 4 connected to the upper end or' the coil 1, and the lower end of said coil 1 connected by the branch pipes or p coil 25 with thelower portion of the drum 3 to deliver the water into the drum.l The water heating and steam generating coils 7 b, 8b and 9b are asV shown in Figure 6, and pipes 16, 17, and 18 `lead upwardly therefrom and discharge downwardly through the upper end of the drum into same. .The upper end of coilA 2 is connected, as at 20, with the upper end of the drum, so that the steam flows from the'upper end of the-drum into `the steam reserve coil 2, and a pipe 31 leads from the lower end of said coil 2 to the upper end of the steam heating coil 21 from which the steam `Hows through the superheating coil 30-and out through the discharge pipe 22.

The structure shown inv Figure 8 is similar to that shown in Figure 7 and embodies additional features of the structure shown lin Figure 1. Thus, a pipe or coil 25c connects the lower end of the coil-1 ,with the lower end of the drumv3 to deliver the water.

into said drum, and coils 7, 8 and 9 such as shown inFigurejl, surround the lower por- *tion of thedrum and have their inner ends and 12 'extend upwardly from their outer ends and are connected to thesteam generating and heating coils 13, 14 and 15. The pipes 16, 17 and .18 leading upwardly from 'the respective coils'13, 14 and 15 eX- tend vdownwardlyvthrough the upper end of the drum, as in Figure 7, instead of being connected to apipe 19 as'in Figure 1.

Otherwise the construction is almost the' same as shown in Figure '1 as ,so far described. However, theupper end of the coil 2 is connected as at 20" with the upper end Aof the drum, as shown in Figure 7, and the the interior as well as theeXterior. These flues 32 can be used in any of the drums shown to increase the heating facilities, of

Having thus described the4 what is claimed as new is 1. boller embodying a vertical drum,

invention,

-connected'thereto, and connections 10, 11

iso

' and connected to the drum for the flow steam from said coils into the drum above ifiaaiea rescrve coil and an upper steam reserve coil,

the lower portion of the water reserve coil, drum and water and steam generating coils being connected for the flow of water therebetween, the discharge terminals ot' the steam generating` coils being extended upwardly above said steam generating coils said steam generating coils,` and the 'steam heating and steam reserve coils being connected one tothe other and to the upper portion of the drum. Y

' 2, A boiler embodyinga' vertical drum, superposed spiral water heating vand steam 'generating coils surrounding the drum at the lower portion thereof, a spiral steam l heating coil surrounding the drum above the aforesaid coils, helical tubing surrounding vthe aforesaid coils to provide a iacket therefor and providing a lower water reserve coil and an upper steam'reserve coil, the lower portions of the water reserve coil, water heating and steam generating coils and drum being connected for the'flow of water therebetween, the discharge terminals of the .steam generating coils being extended upwardly above said steam generating coils and connected to the upper portion of the drum to deliver steam thereinto abovessaid steam generating coils, andthe steam heating and steam reserve coils being in communication with one another and with the upper portion of the drum to receive steam therefrom.

3. A boiler comprising a vertical drum, generating coils surrounding the lower portion of the drum, a jacket constituting a lower water` reserve chamber and an upper steam reserve chamber, the lower portion ot the water reserve chamber, druml and generating coils being in communication for the flow of water therebetween, the delivery terminals oi: said generating coils extending upwardly above said coils and discharging into the drum above said coils, a steam chanber surrounding the upper portion of the drum above said generating coils, and the upper portion of said drum, steam reserve chamber and steam chamber 'being in communication, the steam reserve chamber surrounding said steam chamber.

4. A boiler embodying a vertical drum, water heating and steam generating coils surrounding the lower portion oit the drum, steam heating coils surrounding the upper portion of the drum, a jacket surrounding said coils constituting a lower water reserve chamber and an upper steam reserve chamber, the lower portion of the waterreserve chamber, drum and water and steam generating coils being in communication for the iow of water therebetween, the delivery terminals of the water-'heating and steam gen` erat-ing coils extending upwardly above said coils` and discharging into the drum above said coils, means for conductingsteam from the upper portion of the drum into the steam reserve chamber, and the upper/portion of 'said steam reserve chamber and steam heating coils being in communication.

ln testimony whereof l have signed my nameito this specification in the presence of two subscribing witnesses.

HARTLEY BAKER.

lliitnesses: i

Fnonna einem., l Primaria SgBnowN, 

